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Figure 7.
Fig. 7. The two orientations and resulting interactions
of d(T)-AP(U)-d(T)-3' at the wt-KF exonuclease active site. Only
one of the orientations is compatible with a direct
phosphate-metal ion interaction (A). However, the Zn2+ ... 0
distance is longer (2.49 Å) compared with the hexamer
complex (1.81 Å, Fig. 6A). See Fig. 6 for color scheme and
further explanations.
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